Sodium Metasilicate CAS#6834-92-0
CAS Number: 6834-92-0
Chemical Formula: Na2O3Si
Synonyms:
DISODIUM TRIOXOSILICATE
WATER GLASS
SODIUM METASILICATE N-HYDRATE
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Appearance: White Powder
Sodium Metasilicate CAS#6834-92-0
The metasilicates are highly water soluble, but insoluble in alcohol, acid, and salt solutions. Solutions of sodium metasilicate, when heated or acidified, are hydrolyzed to free sodium ions and silicic acid. In moist air, they are corrosive to metals, including zinc, aluminum, tin, and lead, forming hydrogen gas. They are all strong bases reacting violently with acid.
Sodium metasilicate Chemical Properties |
Melting point | 1089°C |
density | 2.4 |
refractive index | nD25 (glass) 1.520 |
solubility | soluble in cold H2O; reachot H2O; insoluble in ethanol |
form | powder |
color | White |
Specific Gravity | 2.61 |
PH | 11(1 mM solution);11.91(10 mM solution);12.62(100 mM solution) |
Water Solubility | Soluble in cold water. Hydrolyzes in hot water. Insoluble in acids, alcohol and salt solutions. |
Hydrolytic Sensitivity | 0: forms stable aqueous solutions |
Merck | 14,8642 |
Stability: | hygroscopic |
Cosmetics Ingredients Functions | BUFFERING |
InChI | 1S/2Na.O3Si/c;;1-4(2)3/q2*+1;-2 |
InChIKey | NTHWMYGWWRZVTN-UHFFFAOYSA-N |
SMILES | [Na+].[Na+].[O-][Si]([O-])=O |
CAS DataBase Reference | 6834-92-0(CAS DataBase Reference) |
NIST Chemistry Reference | Sodium silicate(6834-92-0) |
EPA Substance Registry System | Sodium metasilicate (6834-92-0) |
Safety Information |
Hazard Codes | C |
Risk Statements | 36/37/38-37-34 |
Safety Statements | 26-45-36/37/39-13-24/25 |
RIDADR | UN 3253 8/PG 3 |
WGK Germany | 1 |
RTECS | VV9275000 |
F | 3 |
TSCA | TSCA listed |
HazardClass | 8 |
PackingGroup | III |
HS Code | 28391910 |
Storage Class | 8B - Non-combustible corrosive hazardous materials |
Hazard Classifications | Eye Dam. 1 |
Hazardous Substances Data | 6834-92-0(Hazardous Substances Data) |
Product Application of Sodium Metasilicate CAS#6834-92-0
The various hydrates of sodium metasilicate are used in soap, detergent, and bath/washing products. They also have a major use as a builder (a material that enhances or maintains the cleaning efficiency of the surfactant, principally by inactivating water hardness) in soaps and detergents. They are also used as an anticorrosion agent in boiler-water feeds.
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